When you open the calendar for scheduling when a post will be emailed out, it should select the same date that is entered in the date field, not the day before. Looks like some kinda timezone conversion glitch.
It will even select yesterday, an invalid day, if you haven’t yet picked a date so the date is defaulted to today:
Steps to Reproduce
Open the calendar widget. It probably depends on your timezone and the scheduled time of day. Pacific time and 4am works.
How did you install Ghost?
digital ocean’s ghost setup package
Browser & OS version
Safari 16.3 on Mac 13.2.1